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6 VP1000 Theory of Operation The Healy Systems VP1000 is a self-contained rotary vane pump, designed for gasoline vapor recovery utilizing various parts of the Healy System Vapor Recovery product line. It is intended for use by either OEM dispenser/pump manufacturers or as an after market add-on to make existing equipment compatible with Healy System technology. In order to convert to 'others' equipment, an electronic interface is required to adapt the targeted pump/dispenser to the new vapor recovery equipment. The interface senses when authorization to dispense has been given and sends signals to the motor to operate at a low speed for one hose, or a higher speed for two hoses. It also functions to shut off the pump/ dispenser if it senses that the vapor pump is not operating properly. The vacuum is regulated at a level sufficient to clear liquid gasoline from the vapor path in MPD applications. The actual amount of vapors withdrawn is controlled by the Healy nozzle, itself, in response to the liquid gasoline flow rate. MOTOR SPECIFICATIONS Horsepower 1/8 HP Voltage 120 VAC INTERFACE SPECIFICATIONS Input voltage 120 VAC Relay current capacity 5AAC Input signals AC and DC voltages up to 130 VAC max Motor Input signal 5 VDC @ 20 Hz 50% Duty Cycle 7 Testing the System • Carefully review all work completed, being sure all mechanical joints are thoroughly tightened and electrical connections sealed. • Open the product crash valves and restore power to the dispenser. • With the power on, but no nozzles authorized, the VP1000 should not be running (unless the ambient temperature is below 40°F), but the power LED (yellow) should be energized on the interface module. • Authorize one handle and the vacuum system should activate when the gasoline flow control valve is engaged. Repeat for all other nozzles, individually testing each nozzle on each side of dispenser. With each authorization, one of the green LED's on the interface module should illuminate and the VP1000 activate. • Note: For unihose dispensers, conduct individual tests for each product grade on each side of the dispener to ensure that the same LED activates for all grades on the same side. If the other LED activates, wiring needs to be corrected. • Authorize one nozzle and listen to the speed of the VP1000. With only one nozzle activated, the speed will be slower than if a nozzle on each side is activated. Activate a nozzle on the other side of the dispenser and listen 9 CARB Approved IOM 8-Wayne Global Century,Select Reliance Series-Executive Orders VR-20I and VR-2n2